CSR non-Sec delta, vega, and curvature risk measures in the SA Cube’s sensitivities-based method, covering risk weights, weighted sensitivities, risk positions, and risk charges under Basel MAR21.
Each subsection below lists the risk weight, sensitivities, risk position, and risk charge measures for the corresponding calculation stage. Jump to the relevant section:
Formulaρkl=min[ρklDELTA⋅ρkloptionmaturity;1]Correlation parameter ρkl between vega sensitivities within the same bucket (‘Medium’ correlation scenario).
The valuation impact of the upward scenario after deduction of delta risk position for curvature risk factors
Reference
Formula−∑i{Vi(xk(RW(curvature)+))−Vi(xk)−RWk(curvature)⋅sik)}The measure CSR non-Sec Curvature CVR Up can be replicated with these measures: CSR non-Sec Curvature shock-up prices minus CSR non-Sec Curvature Delta Weighted Sensitivities.
The valuation impact of the downward scenario for curvature risk factors with delta effect removed
Reference
Formula−∑i{Vi(xk(RW(curvature)−))−Vi(xk)+RWk(curvature)⋅sik)}The measure CSR non-Sec Curvature CVR Down can be replicated with these measures: CSR non-Sec Curvature shock-down prices plus CSR non-Sec Curvature Delta Weighted Sensitivities.
The valuation impact of the upward or downward scenario for curvature risk factors based on the curvature scenario at the bucket level
The measure CSR non-Sec Curvature CVR can be replicated by selecting either the CSR non-Sec Curvature CVR Up or CSR non-Sec Curvature CVR Down based on the scenario value of CSR non-Sec Curvature Bucket Scenario.
Indicates which scenario at the bucket level - up or down - resulted in the worst loss for the curvature risk factor
The measure CSR non-Sec Curvature Bucket Scenario can be replicated by evaluating CSR non-Sec Curvature Risk Position Scenario at the CSR non-Sec Buckets level.